Locking concrete insert

ABSTRACT

A locking insert is described for use in a poured concrete structure. The locking insert includes a hollow elongated body, a longitudinal channel with two configured side edges and a channel floor, a paired gear nut and locking plate that interengages said configured side edges, an attachment bolt, and a method to prevent concrete from seeping into the locking insert. The embedment of the locking insert into a concrete structure provides a positive locking, positional and anti-slip method of attachment for a structural or secondary element. The locking insert allows for vertical positioning and locking of the paired gear nut and locking plate to ensure a proper connection with a structural or secondary element through an attachment bolt. The locking insert with an attached outwardly projecting element transfers the load associated with the structural or secondary element throughout the concrete structure to allow for a high strength connection.

FIELD OF THE INVENTION

This invention relates to a locking concrete insert for use in a pouredconcrete structure. More particularly, this invention relates to apositive locking concrete insert that provides a heavy-duty, positional,and anti-slip mechanism to connect with another structural or secondaryelement.

DESCRIPTION OF THE PRIOR ART

Concrete inserts are utilized in poured concrete structures to connectstructural or secondary elements thereto. In the past, a widely acceptedconcrete insert employed an askew headed bolt set in an elongatedchamber. Although useful in allowing vertical repositioning of theconnecting bolt, the prior insert failed to lock the bolt in a givenvertical position. In some instances, the lack of positive locking inthe prior art devices resulted in structural slippage and failure.

The use of poured concrete structures in the field of construction knownas tilt-up concrete construction is one of the fastest growing buildingtechnologies in North America, with at least 10,000 structures usingthis technology being built every year. Tilt-up construction has been inexistence for more than a century and today constitutes more than 15% ofindustrial buildings. Additional construction using poured-in-placeconcrete slabs, ceilings and walls add to this large percentage.

This popularity is the result of the favorable inherent characteristicsof concrete which include strength, durability, permeability and wearresistance. These characteristics provide completed structures with allthe energy efficiency, structural strength, high thermal mass, fireresistance and durability associated with concrete. Concreteconstruction is also environmentally friendly because the structure iscast onsite, minimizing transportation costs, and the high thermal massof concrete provides excellent insulation. Another benefit of concreteconstruction is the speed of construction. While the panels are underformation, the remaining building systems are readily integrated intothe overall structures. This results in shorter overall constructiontimes. All of these benefits are recognized by builders in all areas ofconstruction from relatively simple single-level office buildings to thecurrent construction of the world's tallest building, the Burj Dubai,which is constructed of reinforced concrete.

Poured concrete tilt-up structures are created horizontally in largeslabs using a form made of a material such as wood. The form is coatedwith a lubricant to prevent the poured concrete from adhering to theform. The form molds the concrete structure, providing the shape andsize, as well as the openings for doorways and windows.

Poured concrete construction often requires concrete structures tosupport other structural or secondary elements. Such support is providedthrough concrete inserts embedded in the concrete structure. Theconcrete inserts are positioned after the form is constructed, byattaching the base of the insert into the form, typically through anail, screw or similar instrument, in a manner that positions the outerface of the insert in a coplanar fashion with the surface of theconcrete. The remainder of the insert is embedded within the concretestructure. After the form is completed, concrete is poured into the formand allowed to cure. Once the concrete is cured, the form is removed,leaving the concrete insert embedded within the concrete wall and openfor connection with a structural or secondary element. According to theConcrete Reinforcing Steel Institute, “formwork and its associated laboris the largest single cost segment of the concrete structuralframe—generally more than 50%.”

The use of positive-locking concrete inserts embedded within theconcrete structure also provides for greater safety for the craftsman.There is no welding or cutting required and there are no dangerousprojections on the surface of the outer panel.

Prior art concrete inserts typically comprise an elongated metal unitwith a longitudinal opening that is capable of receiving a nut and boltset to secure brackets, angle beams or other modes of attachment. Theprior insert generally contains some extended portion set within theconcrete panel to transfer the attached load through the nut and boltinto a large volume of concrete, thereby providing maximum support.During the pouring of the concrete panel, the longitudinal opening ofthe insert is filled with foam, rubber, plastic or other removablesubstance to ensure that the longitudinal opening thereof remainsconcrete free and ready to accept the nut and bolt set.

As exact insert alignment seldom occurs, vertical adjustability of thenut and bolt set is desirable for proper mating of the support members.Longitudinal movement within the concrete insert is essential becauseonce the insert is embedded in the concrete structure, the insert itselfis generally immovable. Although longitudinal movement is achievedthrough the use of the elongated channel and bolt, the nut and boltconnection could loosen and jeopardize the alignment of the structures,which could cause failure.

In preparing for this application the below-mentioned patents havebecome known to the inventors hereof.

Patent Inventor Issue Date 7,213,376 Pulkkanen, et. al. May 8, 20075,729,951 Frohlich Mar. 24, 1998 5,625,993 Kelly May 6, 1997 4,469,466Hotz Sep. 4, 1984 4,235,560 Schimmel Nov. 25, 1980 4,073,329 Hala Feb.14, 1978 4,021,991 Hotz May 10, 1977 4,009,549 Hala Mar. 1, 19771,933,536 Awbrey Nov. 7, 1933 1,854,277 Schatz Apr. 19, 1932

Exemplary of the development of the concrete insert into the currentstate of the prior art, in a patent to Arthur J. Schatz, U.S. Pat. No.1,854,277 issued Apr. 19, 1932, entitled “Eccentric Washer For AngleSupports,” an adjustable washer used to allow vertical movement of anangle support is taught. Schatz's patent works with a bolt that isembedded in a concrete structure rather than a bolt that is housedwithin an embedded insert. Further development in S. C. Awbrey, U.S.Pat. No. 1,933,536 issued Nov. 7, 1933, entitled “Concrete Insert,”provides for a housed modified bolt that helps to restrict verticalmovement and a modified nut for use in ceiling inserts.

More recently, R. Hotz in U.S. Pat. No. 4,021,991 issued May 10, 1977,entitled “Fastening Device,” describes a tapered nut that wedges intoshelf angles to prevent slippage and teaches the use of external forcesto prevent slippage. Further, a modified transition bolt used to clamptogether abutting side rails of a pair of edge-to-edge concrete wallpanels, is taught by V. Schimmel in U.S. Pat. No. 4,235,560 issued Nov.25, 1980.

Other methods of attaching and locking structures to anchoringstructures are described in the prior art in patents such as D. Kelly inU.S. Pat. No. 5,625,993 issued May 6, 1997, entitled “Concrete StructureHaving Load Transferring Insert and Method For Making Same,” whichdiscloses a load transferring V-shaped nut and longitudinal bolt thatrestricts rotation within the insert, and K. Frohlich in U.S. Pat. No.5,729,951 issued Mar. 24, 1998, entitled “Anchoring Device for theConstruction Industry,” which provides attachment of anchors to ananchor rail by means of plastic deformation of the anchor rail and/orthe anchor.

Other concrete inserts have improved positioning capability. Exemplaryof this is J. Pulkkanen in U.S. Pat. No. 7,213,376 issued May 8, 2007,entitled “Bracket for Supporting Structural Element to SupportStructure,” which teaches a moveable bracket part to allowtwo-dimensional connection movement.

The development of a positional, anti-slip mechanism to connect withanother structural or secondary element is an area of importance thatneeds to be more fully addressed. The present assignees, Hohmann &Barnard, Inc., (“H&B”), having many years and vast experience in themasonry and fastening fields have received patents in related fieldsincluding A. Hala in U.S. Pat. 4,009,549 issued Mar. 1, 1977, entitled,“Stone Structural Securement System and Method,” which taught a methodof interconnection between the structural frame of an edifice and theexterior masonry panels. Additionally, in 1978, A. Hala of H&B, receivedanother U.S. Pat. No. 4,073,329 issued Feb. 14, 1978, for an inventionentitled, “Wedge Shaped Lock Washer Construction and Assembly.” Hala'spatent taught an adjustable washer and fastening system that uses aninterlocking wedging engagement system to lock the adjoining members inplace. H&B's devices have received widespread usage in the industry.However, none of these devices are designed to provide a completelocking high-load concrete insert that will withstand large scaleforces. Further, none of these devices provide the versatility of use ofthe present invention.

The present invention has varied applications that include, but are notlimited to, the following typical uses: providing a brick relief angleat a concrete beam; providing a brick relief angle at a concrete slab ona corrugated metal deck with a pour-stop; providing a brick relief angleat a precast concrete lintel; casting into the underside of a concreteslab to accept partition wall restraint angles; welding to the undersideof a steel beam to accept a partition wall restraint angle; welding tothe web of a spandrel beam to accept a masonry wall restraint anchor;casting into the underside of a concrete slab to accept pipes, ductwork,etc.; providing a gravity or tieback insert in precast panels; castinginto radial concrete to accept handrails; embedding into a fully groutedconcrete masonry unit wall to accept deadload or lateral anchors forstone, or precast veneers; and casting into concrete walls to acceptstone anchors.

Accordingly, while several distinct devices were developed to assist inconstructing a concrete structure, the current state of the art does notfulfill the need for a positional, anti-slip mechanism to connect withanother structural or secondary element. As described hereinbelow, thepresent invention employs a specialized locking system that allowspositional movement of the nut, while maintaining a high-strength,anti-slip locked connection.

SUMMARY

The present invention is composed of a solid material such as steel orcast malleable iron formed into a squared tube. The squared tube isaltered to provide a longitudinal channel in the device, which providesaccess to the hollow elongated body. Additional elements such as endplates and outward projections can also be affixed.

During construction, when formwork is used, the rear portion of the baseof the device is constructed with an attachment opening to receive anail, screw or other attachment instrument for use in connecting thedevice to the formwork in a manner that positions the base of the devicein a coplanar fashion with the surface of the concrete. The elongatedbody can be constructed with end plates or can be filled with aremovable protective insert to restrict concrete from entering thelongitudinal channel. Once the locking insert is attached to theformwork, concrete is poured into the structure and the locking insertis set in concrete. After the concrete is set, any protective insert isremoved and the longitudinal channel is exposed. Further, this versatiledevice can be welded to the underside of a steel beam to acceptpartition wall restraint angles or welded to the web of a spandrel beamto accept masonry wall restraint anchors.

The longitudinal channel contains a frictional gripping cutout along thetwo configured sides that inversely matches and interengages thefrictional gripping cutout of the interengaging portion of the gear nut.When the gear nut is paired with a locking plate, it is inserted intothe longitudinal channel either, through the longitudinal channel,through a port, or by rotational movement, and can be verticallypositioned to the predetermined location and set into place. Pairing ofthe gear nut and locking plate occurs either through welding the gearnut to the locking plate, machining the gear nut and locking plate, ormanually affixing the gear nut and locking plate through the use of anattachment bolt. An attachment bolt is inserted through the paired gearnut and locking plate to provide a means for connecting to a secondaryor structural connection. Additionally, an attachment bolt can be formedwith the single two-part gear nut and locking plate to provide a singlecomplete means for connecting to a secondary or structural connection.Gear nut positioning assistance is provided through a locating springthat is affixed to the locking plate. Such locating spring pushesagainst the channel floor and longitudinal channel, thereby holding thepaired gear nut and locking plate in place until it can be secured, byan attachment bolt, to a secondary or structural connection.

In general terms, a locking insert device for a poured concretestructure is disclosed hereby, which insert includes a hollow elongatedbody with an opening in one face thereof forming a longitudinal channelalong the body and attaching hardware to mount a structural element. Theopening has configured side edges and the attaching hardware is a novelpaired gear nut and locking plate that interengages the configured sideedges and accepts an attachment bolt. Upon installation, the locatingspring, affixed to the locking plate, secures the gear nut and lockingplate in the longitudinal channel at the desired location until thesecondary or structural connection is secured through an attachmentbolt. A means is provided to prevent wet concrete from seeping into thelocking insert. The locking insert is constructed of galvanized steel,hot dip galvanized steel, stainless steel, cast malleable iron, orbright basic steel. The interengagement of the locking insert with thenovel hardware provides anti-slip attachment and positive locking andpositioning for a structural or secondary element onto a concretestructure.

The locking insert allows for vertical positioning and locking of thegear nut and locking plate to ensure a proper connection with astructural or secondary element through an attachment bolt. Further, thelocking insert with an attached outwardly projecting element transfersthe load associated with the structural or secondary element throughoutthe concrete structure to allow for a high strength connection.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following drawings, the same parts in the various views areafforded the same reference designators.

FIG. 1 is a perspective view of a first embodiment of this inventionshowing a locking insert with a hollow elongated body with end platesand outwardly projecting elements attached to the elongated bodyembedded in a poured concrete structure, with the paired gear nut andlocking plate and attachment bolt set within the longitudinal channel;

FIG. 2 is a cross sectional view of FIG. 1 taken along a plane bisectingthe concrete insert showing the paired gear nut and locking plate andlocating spring interengaged with the configured side edges;

FIG. 3 is a perspective view of a rotating paired gear nut and lockingplate;

FIG. 4 is a perspective view of an arcuate paired gear nut and lockingplate;

FIG. 5 is a perspective view of an alternate design paired gear nut andlocking plate;

FIG. 6 is a perspective view of an alternate design paired gear nut andlocking plate;

FIG. 7 is a perspective view of a second embodiment of this invention,similar to FIG. 1, but employing a longitudinal channel with a port.

DETAILED DESCRIPTION OF THE DRAWINGS

In the embodiments described hereinbelow, the locking insert employs aninnovative design that combines the strength and design of the pairedgear nut and locking plate, the longitudinal channel and the elongatedbody. The result of such design produces a locking insert wherein thepaired gear nut and locking plate interengages the channel sides,providing a positional, positive locking connection when secured to asecondary or structural connection through an attachment bolt.

In poured concrete construction, shown in the embodiments hereof, thislocking insert provides a paired gear nut and locking plate for use inattaching a structural or secondary element through an attachment bolt.Further, the insert vertically locks the structural or secondary elementin place and prevents pullout from the elongated body. The outwardlyprojecting element supports the attached load by transferring andspreading such load throughout the concrete mass containing the lockinginsert, providing a high strength support system. Recent advancements inconcrete building construction, and its related gains in popularity,demand such an easy to use, high strength, positional and anti-sliplocking connection to provide proper, efficient and safe construction.

In a related sense, prior art concrete inserts provide a method ofattaching and positioning structural and secondary elements. Althoughuseful in providing a method of attachment with the ability toreposition the attachment point, the prior art fails to completelyprevent slippage and to fully lock the connection. In some instances,such shortcomings of the prior art resulted in structural slippage andfailure. Further, the prior art lacks the versatility associated withthe novel design and versatility of this invention.

To address the two concerns, namely, positioning and preventing boltslippage and pullout, the inventor's innovative locking insert employs anovel and unique paired gear nut and locking plate that interengageswith the longitudinal channel. The first concern is addressed by thegear nut portion of the paired gear nut and locking plate thatinterengages the configured edges of the longitudinal channel in theelongated body. The gear nut portion fits within the configured edges ofthe longitudinal channel to allow vertical positioning. The latterconcern is addressed by the design of the locking plate portion of thepaired gear nut and locking plate which, when set within thelongitudinal channel and secured against a structural or secondaryconnection with an attachment bolt, fully locks the paired gear nut andlocking plate within the heavy-duty, high strength elongated body.

In the detailed description, the elongated body and the paired gear nutand locking plate are constructed of carbon steel or cast malleableiron.

Referring now to FIGS. 1 through 3, the first embodiment of a lockinginsert of this invention set within a poured concrete structure is shownand is referred to generally by the numeral 20. In this embodiment, asshown in FIGS. 1 and 2, a hollow elongated body 22 is shown having alongitudinal channel 24 in the front face of the locking insert and endplates 26 and 28 on each end of the elongated body. The longitudinalchannel 24 contains a channel floor 30 and parallel coplanar configuredsides 32 and 34. The configured sides 32 and 34 are formed in a sharktooth manner 42 to interengage the paired gear nut and locking plate 38.No port is required because the paired gear nut and locking plate 38 (asshown in FIG. 3) is inserted through the longitudinal channel 24 withthe locking plate portion 41 of the paired gear nut and locking plate 38parallel to the configured sides 32 and 34, rotated 90 degrees andpulled into the longitudinal channel 24 opening until the shark toothedgear nut portion 43 of the paired gear nut and locking plate 38 isengaged with the configured sides 32 and 34.

The shark toothed paired gear nut and locking plate 38 engages theconfigured sides 32 and 34 of the longitudinal channel 24, providing ananti-slip method of attachment. The paired gear nut and locking plate 38works in conjunction with a locating spring 39 to set the paired gearnut and locking plate 38 in place prior to attachment to a secondary orstructural connection through an attachment bolt 44. As shown in FIG. 2,when the locating spring 39 is pressed against the channel floor 30 andthe paired gear nut and locking plate 38, the locating spring 39 setsthe paired gear nut and locking plate 38 within the longitudinal channel24 and against the configured sides 32 and 34. The paired gear nut andlocking plate 38 is set by the locating spring 39 until it can besecured within the longitudinal channel 24 by an attachment bolt 44 to asecondary or structural connection.

Further, to allow attachment load transfer throughout the concretestructure 40, the elongated body contains bolt head shaped outwardlyprojecting elements 50, 52 and 54 that are secured deep within theconcrete structure 40 as shown in FIG. 1. The shape of the outwardlyprojecting elements 50, 52 and 54 can take the form of an array ofattachments, including a frustoconical shape or any other design thatassists in transferring the attachment load throughout the concretemember 40. The best mode of placement of the outwardly projectingelements 50, 52 and 54 is one outwardly projecting element for every sixinches of elongated body 22, however, lessening or adding otheroutwardly projecting elements 50, 52 and 54 is allowable. The lockinginsert 20 can be attached to formwork through an attachment opening (notshown) in the channel floor 30. The attachment opening provides a methodof attachment using nails, screws or the like to secure the lockinginsert 20 against the formwork. An alternative design provides anothermethod of attachment (not shown) through the use of flange members thatproject outwardly from the front face of the elongated body 22.

The description that follows is of a second embodiment of the lockinginsert. For ease of comprehension, where similar parts are usedreference designators “100”, units higher are employed. Thus, theoutwardly projecting elements 150, 152 and 154 of the second embodimentare analogous to the outwardly projecting elements 50, 52 and 54 of thefirst embodiment.

Referring now to FIGS. 4 to 7, the second embodiment of a locking insertof this invention consists of a hollow elongated body 122 having alongitudinal channel 124 in the front face of the locking insert and endplates 126 and 128 on each end of the elongated body. The longitudinalchannel 124 contains a channel floor and parallel coplanar configuredsides 132 and 134, and a port 136. The port 136 can be located at anyposition, but the best mode of manufacture is to locate the port at oneend of the longitudinal channel 124. The configured sides 132 and 134are formed in a shark tooth manner 142 to interengage the nut and thechosen paired gear nut and locking plate assemblies 160 and 170, asshown in FIGS. 5 and 6. The paired gear nut and locking plate of thefirst embodiment 41 as shown in FIG. 3. is also matched to thelongitudinal channel 124 of this second embodiment.

The paired gear nut and locking plates for use with the locking insert122 can take numerous forms, but the best mode of practice would be toeither form the paired gear nut and locking plate 160 as a single pieceor as two separate pieces 170. The paired gear nut and locking plate160, as shown in FIG. 5, consists of an interengaging shark toothed gearnut portion 162 to interengage with the configured sides 132 and 134, alocking plate 164 and a locating spring (not shown). The paired gear nutand locking plate 170, as shown in FIG. 6, consists of an interengagingshark toothed gear nut portion 172 to interengage with the configuredsides 132 and 134, a separate locking plate portion 174 and a locatingspring (not shown). Although, no port is required because both pairedgear nut and locking plates 160 and 170 can be inserted through thelongitudinal channel 124 and adjusted into the proper location, a portis added to ease insertion into the longitudinal channel 124. Once thefront portion of the paired gear nut and locking plate 162 and 172 isengaged with the longitudinal channel 124, the locating spring is setagainst the channel floor and the locking plate portion 164 and 174thereby holding the paired gear nut and locking plate in place until thesecondary or structural connection is set with an attachment bolt. Thisaction, completes the anti-slip locking action.

An alternative longitudinal channel design, employing configured sideedges containing an arcuate locking design (not shown), will similarlyinterengage an alternative arcuate paired gear nut and locking plate 180as shown in FIG. 4. The arcuate paired gear nut and locking plate 180consists of three parts, an interengaging arcuate gear nut portion 182,a locking plate 184, either welded to the gear nut portion or placed asa separate element, and a locating spring(not shown). The arcuate gearnut portion 182 engages the configured sides of the interengagingarcuate longitudinal channel, thereby locking the arcuate paired gearnut and locking plate 180 and providing an anti-slip method ofattachment, when secured against a secondary or structural connectionwith an attachment bolt. The locking plate 184 works in conjunction withthe locating spring. When the locating spring is pressed against thechannel floor and the locking plate 184, the arcuate paired gear nut andlocking plate 180 is set within the longitudinal channel and against theconfigured sides, awaiting the secondary or structural connection andattachment bolt that completes the anti-slip locking action.

Further, to allow attachment load transfer throughout the concretestructure, the elongated body contains bolt head shaped outwardlyprojecting elements 150 and 152 that are secured deep within theconcrete structure. Outwardly projecting elements 150 and 152 can takethe form of an array of attachments, including a frustoconical shape orany other design that assists in transferring the attachment loadthroughout the concrete member. The best mode of placement of theoutwardly projecting elements 150 and 152 is one member for every sixinches of elongated body 122, however, lessening or adding otheroutwardly projecting elements 150 and 152 is allowable.

The locking insert can be attached to formwork through an attachmentopening (not shown) in the channel floor. The attachment openingprovides a method of attachment using nails, screws or the like tosecure the elongated body 122 against the formwork. An alternativedesign provides another method of attachment (not shown) through the useof flange members that project outwardly from the front of the elongatedbody 122.

An alternative elongated body design (not shown) is produced without endplates 126 and 128. In an effort to lower costs, the elongated body isfilled with a removable insert consisting of foam, plastic or rubber.The removable insert is placed in the longitudinal channel prior to thepouring of the concrete, to inhibit the wet concrete from seeping intothe longitudinal channel during the curing process. Once the concrete iscured, the removable insert is lifted from the longitudinal channel toallow insertion of a paired gear nut and locking plate into thelongitudinal channel. Because many varying and different embodiments maybe made within the scope of the inventive concept herein taught andbecause many modifications may be made in the embodiments hereindetailed in accordance with the descriptive requirement of the law, itis to be understood that the details herein are to be interpreted asillustrative and not in a limiting sense.

1. A locking insert for embedment in one face of a poured concrete structure for attaching a structural or secondary element thereto, said locking insert comprising: an elongated body having a hollow interior and an exterior surface adapted, upon insertion into said concrete structure, to be substantially coplanar with said face thereof, a longitudinal channel in said exterior surface of said elongated body providing an opening into said interior thereof, said longitudinal channel further comprising: a channel floor disposed opposite said opening; two configured sides of the channel opening, said sides being parallel and coplanar the one with the other, and; a paired threaded gear nut and locking plate for disposition in said longitudinal channel and upon installation and rotation interengages with said configured sides of said longitudinal channel to secure said locking insert; whereby said locking insert provides a positional slip-free attachment site for said structural or secondary element.
 2. A locking insert as described in claim 1, wherein said elongated body further contains at least one attachment opening in said channel floor, said attachment opening adapted for attachment to formwork through the use of an attachment member.
 3. A locking insert as described in claim 2, wherein said attachment member is selected from a group consisting of nails, screws and bolts.
 4. A locking insert as described in claim 1, wherein an outwardly projecting element extends from the exterior surface of the elongated body opposite the opening of the longitudinal channel, said outwardly projecting element adapted for insertion into the concrete structure to more fully transfer the load associated with said secondary or structural element.
 5. A locking insert as described in claim 4, wherein said outwardly projecting element is in the shape of a bolt.
 6. A locking insert as described in claim 4, wherein said outwardly projecting element is frustoconically shaped.
 7. A locking insert as described in claim 1, wherein said elongated body, said paired threaded gear nut and locking plate, and said outwardly projecting element are constructed of material selected from a group consisting of galvanized steel, hot dip galvanized steel, stainless steel, cast malleable iron, and bright basic steel.
 8. A locking insert as described in claim 7, wherein said elongated body is formed from a squared tube;
 9. A locking insert as described in claim 1, wherein said paired threaded gear nut and locking plate includes a gear nut portion configured to interengage said longitudinal channel edges to position said paired gear nut and locking plate.
 10. A locking insert as described in claim 1, wherein the locking plate portion of said paired threaded gear nut and locking plate has a horizontal width greater than the width of said longitudinal channel, to lock said paired gear nut and locking plate within said longitudinal channel when an attachment bolt connects said gear nut and locking plate with a secondary or structural connection.
 11. A locking insert as described in claim 10, wherein said attachment bolt includes a bolt head attached to one end of said attachment bolt.
 12. A locking insert as described in claim 10, wherein said attachment bolt is attached to said paired threaded gear nut and locking plate by welding.
 13. A locking insert as described in claim 1, wherein said configured sides are shaped in a shark tooth manner.
 14. A locking insert as described in claim 1, wherein said configured sides are shaped in an arcuate manner.
 15. A locking insert as described in claim 1, wherein said elongated body has end plates adapted to restrict entry of concrete into said longitudinal channel.
 16. A locking insert as described in claim 1, wherein said longitudinal channel contains a removable filler, adapted to restrict entry of concrete into said longitudinal channel, selected from a group consisting of foam, rubber or removable plastic.
 17. A locking insert as described in claim 1, wherein a force emitting object is affixed to said locking plate portion, whereby when said locking plate portion is inserted into said longitudinal channel, said force emitting object engages said channel floor and said paired gear nut and locking plate against said configured side edges, thereby restricting movement.
 18. A locking insert as described in claim 17, wherein said force emitting object is a spring.
 19. A locking insert for embedment in one face of a poured concrete structure for attaching a structural or secondary element thereto, said locking insert comprising: an elongated body having a hollow interior and an exterior surface adapted, upon insertion into said concrete structure, to be substantially coplanar with said face thereof, a longitudinal channel in said exterior surface of said elongated body providing an opening into said hollow interior thereof, said longitudinal channel further comprising: a channel floor disposed opposite said opening; two configured sides of the channel opening, said sides being parallel and coplanar the one with the other; and, a paired threaded gear nut and locking plate for disposition in said longitudinal channel which, upon installation and engagement, interengages with said configured sides of said longitudinal channel to secure said locking insert; whereby said locking insert provides a positional slip-free attachment site for said structural or secondary element.
 20. A locking insert as described in claim 19, wherein said elongated body further contains at least one attachment opening in said channel floor, said attachment opening adapted for attachment to formwork through the use of an attachment member. 